Correction to: European Journal of Pediatrics https://doi.org/10.1007/s00431-021-04327-1

In the original published version of the above article contained an error, the affiliation “Microbiomics Unit, Department of Medical and Surgical Sciences, University of Bologna, 40,138 Bologna, Italy” should have been removed for the following authors: Isadora Beghetti, Luigi Corvaglia and Arianna Aceti. The affiliation section has been updated.

The original article has been corrected.